04.05.2016 12:32, Peter Wu wrote: > Avoid possible connection drops on Linux (when tcp_syncookies is > disabled) or fallbacks to SYN cookies with the following kernel warning: > > TCP: request_sock_TCP: Possible SYN flooding on port 1234. Sending > cookies. Check SNMP counters. > > Since Linux 4.4 (ef547f2ac16b "tcp: remove max_qlen_log"), a backlog of > zero is really treated as the "queue length for completely established > sockets waiting to be accepted" (listen(2)). This is apparently a valid > interpretation of an "implementation-defined minimum value" for a > backlog value of 0 (listen(3p)). Previous kernels would use 8 as > minimum value, but that is no longer the case.
Applied to -trivial, thanks! /mjt
